Supply With Micronutrients (Purine and Pyrimidine) in Infants: a Prospective and Observational Study
Beobachtungsstudie Zur Versorgung Reif- Und Frühgeborener Mit ausgewählten Mikronährstoffen Wissenschaftliche Untersuchung Bei Minderjährigen
調査の概要
詳細な説明
Collection of:
- cord plasma in preterm and term infants.
- remnants of clinically indicated blood samples of mothers 24 hours before or after birth.
- remnants of clinically indicated blood samples of preterm and term infants during neonatal care.
- breast milk once a weak during neonatal care of the infant.
Determination concentrations of micronutrients by mass spectrometry.
Aim is to compare cord plasma concentrations with postnatal plasma concentrations and to measure concentrations in breast milk to determine the actual supply.
Update September 2020:
The results obtained according to the original protocol revealed a serious sample instability when using remnants of clinical blood samples. Remnants can not be used and therefore the protocol had to be changed. A new approval of the Ethics Committee was obtained and is available to the study team. The following changes for sample collection were implemented: an additional blood sample (2.7ml EDTA blood) is taken from the mothers after approval.The blood samples of premature and newborns (max. 3x 0.2 ml) are obtained when a clinically indicated blood sample is taken. In both cases the serum is frozen immediately within one hour after collection.
Due to these changes, the expected end of the study is postponed to 2021.
研究の種類
入学 (予想される)
連絡先と場所
研究場所
-
-
-
Tuebingen、ドイツ、72076
- 募集
- University Children's Hospital Tuebingen
-
コンタクト：
- Axel Franz, MD
- 電話番号：+497071290
- メール：axel.franz@med.uni-tuebingen.de
-
主任研究者：
- Axel Franz, MD
-
-
参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
サンプリング方法
調査対象母集団
説明
Inclusion Criteria:
- 23+0-42+6 SSW
Exclusion Criteria:
- congenital malformation, genetic disorders
- metabolic disease of the infant
- missing agreement
研究計画
研究はどのように設計されていますか？
デザインの詳細
コホートと介入
グループ/コホート |
介入・治療 |
|---|---|
|
23-27w
preterm infants 23+0-27+6SSW
|
collection of cord blood
collection of remnant of clinically indicated blood sample
collection of remnant of clinically indicated blood sample.
If not available blood sample is taken after mother agreed
collection of breast milk 1/week during neonatal care (maximum 8 weaks)
|
|
28-31w
preterm infants 28+0-31+6SSW
|
collection of cord blood
collection of remnant of clinically indicated blood sample
collection of remnant of clinically indicated blood sample.
If not available blood sample is taken after mother agreed
collection of breast milk 1/week during neonatal care (maximum 8 weaks)
|
|
32-34w
preterm infants 32+0 - 34+6SSW
|
collection of cord blood
collection of remnant of clinically indicated blood sample
collection of remnant of clinically indicated blood sample.
If not available blood sample is taken after mother agreed
collection of breast milk 1/week during neonatal care (maximum 8 weaks)
|
|
35-36w
preterm infants 35+0-36+6 SSW
|
collection of cord blood
collection of remnant of clinically indicated blood sample
collection of remnant of clinically indicated blood sample.
If not available blood sample is taken after mother agreed
collection of breast milk 1/week during neonatal care (maximum 8 weaks)
|
|
37-42w
term infants 37+0-42+6
|
collection of cord blood
collection of remnant of clinically indicated blood sample
collection of remnant of clinically indicated blood sample.
If not available blood sample is taken after mother agreed
collection of breast milk 1/week during neonatal care (maximum 8 weaks)
|
この研究は何を測定していますか？
主要な結果の測定
結果測定 |
時間枠 |
|---|---|
|
Concentration of purine and pyrimidine in cord plasma
時間枠：at birth
|
at birth
|
二次結果の測定
結果測定 |
時間枠 |
|---|---|
|
Concentration of purine and pyrimidine in neonatal plasma
時間枠：at times when a clinically indicated blood sample is taken before discharge home from the initial neonatal hospitalization (at a postnatal age of up to 4-5 months at the most in very preterm infants)
|
at times when a clinically indicated blood sample is taken before discharge home from the initial neonatal hospitalization (at a postnatal age of up to 4-5 months at the most in very preterm infants)
|
|
Concentration of purine and pyrimidine in breast milk
時間枠：once a week before discharge home from the initial neonatal hospitalization, maximum 8 weeks
|
once a week before discharge home from the initial neonatal hospitalization, maximum 8 weeks
|
|
Concentration of purine and pyrimidine in plasma of mothers
時間枠：24 hours before and after birth
|
24 hours before and after birth
|
協力者と研究者
研究記録日
主要日程の研究
研究開始 (実際)
一次修了 (予想される)
研究の完了 (予想される)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (実際)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。